Ali Zakerolhosseini

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Quantum Cellular Automata (QCA) is an emerging nanotechnology and one of the top six technologies of the future. CMOS technology has a lot of limitations while scaling into a nano-level. QCA technology is a perfect replacement of CMOS technology with no such limitations. In this paper we have proposed one 2:1 multiplexer circuit having lowest complexity and(More)
Recent research indicates the promising performance of employing reconfigurable systems to accelerate multimedia and communication applications. Nonetheless, they are yet to be widely adopted. One reason is the lack of efficient operating system support for these platforms. In this paper, we address the problem of runtime task scheduling as a main part of(More)
Recently several efficient schemes are proposed to provide security of e-medicine systems. Almost all of these schemes have tried to achieve the highest security level in transmission of patients’ medical information to medical institutions through a heterogeneous network like Internet. In this paper, we explain the insecurity of these schemes against(More)
Elliptic Curve Cryptosystems (ECC) have recently received significant attention by researchers due to their high performance such as low computational cost and small key size. In this paper a novel untraceable blind signature scheme is presented. Since the security of proposed method is based on difficulty of solving discrete logarithm over an elliptic(More)
Huang et al. has recently proposed an efficient key management and access control scheme for mobile agent environments based on Elliptic Curve Cryptosystem (ECC). Although their scheme provides superior efficiency in comparison with the previous works, however some active attacks threaten its security. In this paper a new dynamic key management scheme based(More)
Measuring the tumor depth of invasion in skin tissue is of great importance for decision making in treatment of melanoma. Traditionally, measuring the tumor depth is based on the examination of histopathological slides by pathologist under the microscope which is time consuming and prone to intra and inter observer variability. In this paper, we propose a(More)
In recent years, the Elliptic Curve Cryptosystem (ECC) has attracted a great deal of attention due to its advantages. In this paper, a new ECC based scheme in a hierarchical mobile agent framework is presented. In the proposed scheme legality of agents is verified by hosts to avoid the masquerade attack. Analyzing the security criteria and performance(More)